Question

When contemplating stopping distances, the three critical factors to be considered are:

a) Reaction time, speed, and road conditions
b) Mass, velocity, and acceleration
c) Friction, air resistance, and gravity
d) Inertia, momentum, and energy

Answer 1

The critical factors in stopping distances are reaction time, speed, and road conditions. The stopping distance is determined by adding the distance traveled during the reaction time to the braking distance. The velocity remains constant during the driver's reaction time.

Step-by-step explanation:

When contemplating stopping distances, the three critical factors to be considered are: reaction time, speed, and road conditions. Once the driver reacts, the stopping distance is the same for dry and wet concrete. To calculate the stopping distance, we need to determine how far the car travels during the reaction time and add that to the stopping time. It is reasonable to assume that the velocity remains constant during the driver's reaction time.